The protein cooking time listed in this recipe has been updated.
As of December 2025, we’ve revised cooking times for all our proteins to reflect improved food safety guidance.
Check out the latest recommended times in our Cooking Guidelines.
Maple & Mustard Tuna Traybake
A one-pan dinner that makes weeknight cooking a breeze. Starring sustainably-sourced tuna and a tangy, maple-mustard dressing. Layer it all up with sweetcorn, garlicky tomatoes and fluffy potato wedges. Broccoli on the side for crunch.
Prep in 10
High protein
1/3 daily fibre
Low sat fat
Serving size
Ingredients
- 280g sweetcorn (sweetcorn, water, salt)
- 4 garlic clove
- 200g seasonal mixed tomatoes
- 4 wild-caught yellow fin tuna steaks (Fish)
- 240g Tenderstem broccoli
- 4 large potatoes
- 60g maple and mustard dressing (Mustard) (cold pressed rapeseed oil, cider vinegar, maple syrup, water, dijon mustard, wholegrain mustard, salt, ground black pepper, xanthan gum.)
- 2 pepper
Nutritional Information
Calories: 523
Protein: 42g
Carbs: 58g
Fat: 12g
Maple & Mustard Tuna Traybake
A one-pan dinner that makes weeknight cooking a breeze. Starring sustainably-sourced tuna and a tangy, maple-mustard dressing. Layer it all up with sweetcorn, garlicky tomatoes and fluffy potato wedges. Broccoli on the side for crunch.
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Cooking Instructions
- Preheat the oven to 240C / fan 220C / gas mark 9. Cut the potato into wedges. Place onto a lined baking tray and toss with 1 tbsp oil, a pinch of sea salt and black pepper. Roast for 25-30 mins, until soft and golden.
- Meanwhile, finely chop or crush the garlic. Halve the tomatoes. Drain the sweetcorn. Dice the pepper into 2cm squares. Place the pepper, sweetcorn and garlic onto another lined baking tray. Toss with 2 tsp oil and a pinch of sea salt and black pepper. Bake for 10-12 mins, until charred.
- Trim the broccoli. Season the tuna with sea salt and black pepper. After 10 mins of baking, scatter over the tomatoes and broccoli and place the tuna on top. Drizzle with 1 tsp oil and season with sea salt and black pepper. Bake for 10-12 mins, until cooked through.
- Serve onto plates and drizzle over the maple mustard dressing.
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